Suppose a retailer claims that the average wait time for a customer on its support line is 177 seconds. A random sample of 53 customers had an average wait time of 169 seconds. Assume the population standard deviation for wait time is 52 seconds. Using a 95% confidence interval, does this sample support the retailer's claim? Using a 95% confidence interval, does this sample support the retailer's claim? Select the correct choice below, and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Yes, because the retailer's claim is between the lower limit of seconds and the upper limit of seconds for the mean wait time. O B. No, because the retailer's claim is not between the lower limit of seconds and the upper limit of seconds for the mean wait time.
Suppose a retailer claims that the average wait time for a customer on its support line is 177 seconds. A random sample of 53 customers had an average wait time of 169 seconds. Assume the population standard deviation for wait time is 52 seconds. Using a 95% confidence interval, does this sample support the retailer's claim? Using a 95% confidence interval, does this sample support the retailer's claim? Select the correct choice below, and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Yes, because the retailer's claim is between the lower limit of seconds and the upper limit of seconds for the mean wait time. O B. No, because the retailer's claim is not between the lower limit of seconds and the upper limit of seconds for the mean wait time.
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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Transcribed Image Text:Suppose a retailer claims that the average wait time for a customer on its support line is 177 seconds. A random sample of 53 customers had an average wait time of
169 seconds. Assume the population standard deviation for wait time is 52 seconds. Using a 95% confidence interval, does this sample support the retailer's claim?
Using a 95% confidence interval, does this sample support the retailer's claim? Select the correct choice below, and fill in the answer boxes to complete your choice.
(Round to two decimal places as needed.)
O A. Yes, because the retailer's claim is between the lower limit of
seconds and the upper limit of
seconds for the mean wait time.
O B. No, because the retailer's claim is not between the lower limit of
seconds and the upper limit of
seconds for the mean wait time.
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